Hamad Fuels and Combustion 02/04/2021 A. Humic coals B. Liptobiolites C. Sapropelic coals D. None of these Related Mcqs: Which of the following would require least amount of secondary air for combustion ?A. Coke breeze containing 25% ash and 2% volatile matter B. Anthracite containing 10% volatile matter and 8% ash C. Bituminous coal containing 20% ash and 25% volatile matter D. Semi-bituminous coal containing 25% ash and 20% volatile matter... With increase in moisture content of coal, its___________________?A. Calorific value increases B. Caking properties diminish C. Swelling during carbonisation becomes excessive D. None of these... Which of the following has the highest calorific value ?A. Lignite B. Sub-bituminous coal C. Anthracite D. Peat... When steam is passed over coal resulting in the endothermic reaction represent by, C + H2O = CO + H2, it is called the _______________ of coal?A. Carbonisation B. Oxidation C. Coalification D. Gasification... Kopper-Totzek coal gasifier_________________?A. Can give ammonia synthesis gas (H2 + N2) B. Is a moving bed reactor C. Cannot use coking coal D. Operate at very high pressure...
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